 Hi and welcome to the session. Let us discuss the calling question. The question says 30 children were asked about the number of hours they've watched TV programs. In the previous week, the results were found as follows. This is the data given to us. First part is make a book frequency distribution table for this data taking class width 5 and one of the class intervals as 5 to 10. Second part is how many children watched TV for 15 or more hours a week. Let us now begin with the solution. In the first part, we have to construct a frequency distribution table for the given data. Let us make a table half. We have made two columns one for the number of hours and another for frequency. The information given to us about class interval is that the class intervals are a width 5 and one of the class interval is 5 to 10. Now looking at the data, here the minimum value is 1 and maximum values is 70. So this means we have to take class interval as 0 to 5, 5 to 10, 10 to 15, 15 to 20. Remember that 5 is not included in this interval. It is included in the next interval. Similarly, n is not included in this interval. It is included in the next interval and also 15 is not included in this interval. It is included in the next interval that is 15 to 20. Now keeping this in mind, we will fill the frequency column. Now look at the data. We will find the number of values which are covered within the interval 0 to 5. Now the values covered in this interval are 1, 2, 3, 4, 3, 4, 2, 1, 3, 2, right. So there are 10 values which are covered within the interval 0 to 5. So frequency of 0 to 5 is 10. Now again look at the data and find the number of values which are covered within the interval 5 to 10. Now 6, 5, 8, 8, 8, 6, 8, 5, 9, 6, 8, 7 are covered within this interval. So there are 30 values which are covered within the interval 5 to 10. So frequency of interval 5 to 10 is 30. Similarly, we will fill the frequency of other intervals. Now when adding all these frequencies, we get 30. This is the required frequency distribution table. So this is the first part. Let us now do the second part. In second part, we have to find that how many children got television for 15 or more hours a week. Now look at this table. Frequency of class interval 15 to 20 is 2. So this means only two students watch TV for 15 or more hours a week. Hence our required answer is two children. So this is some heat cessation. Bye and take care.